This paper describes the automatic generation of index images with the DSP in high definition still image retrieval and display systems. Index images generated from the high definition still images to be searched for the image retrieval are characterized to a great extent. A spatial filter suitable for picking up the object of an image with its background was selected, and additional processing was carried out to clearly describe the contour of the object. The fabricated was built on a DSP as an application. Each automatic index image was automatically generated in 110 seconds whereas the index image generated in accordance with the conventional method took 35 minutes for completion. Samples used in the study were prepared from digital archived of Kosode garments owned by the National Museum of Japanese History. The success rate of the image retrieval was 99.6% using the index image prepared by the proposed method.
In an conventional video retrieval methods, a query video was detected from long video sequence. But a method to detect a same videos between video sequence are not discussed enough. In this paper, we propose a new method which enable to detect the same video part between videos. The proposed method is based on a color information correlation. Our experimental results suggest that the proposed method can detect the same video part between videos.
For image retrieval, it is necessary to add keywords into images for the reference. This paper suggests a new method, with which keywords are automatically added to landscape images. Keywords to be added can be divided into two categories: Blocked keyword and Global keyword. Blocked keyword is added to each square block that is created by dividing an image. The keywords include the colors, edges, and position of each block. On the other hand, Global keyword is obtained from the Blocked keywords added already. They include the area, the circular rate, and the gravity center position of the regions, which have the maximum area for each blocked keyword added in the image. Using those features, keywords are added by discriminant analysis. The experiment of the method is performed and the result is reported in this paper.
We propose a new feature description method of video using Mahalanobis-Taguchi System processing for motion vector. A new method has advantages of high retrieval rate for pick up any desired specific scenes. As the picture of the retrieval object, baseball scenes were studied and optimal parameters were clarified to extract the pitching scenes.
The Ladder Network with rounding are generally used to realize reversible ransform. The rounding used in Ladder Network is cause of low accuracy of transform. In this report, we propose the method to reduce the amount of rounding and operation in Ladder Network that calculate 2 dimensional rotation transform of 2x2 data. By using this method, it is shown that the Mean Square Error of the new lossless 4x4 2D-DCT is smaller than that of conventional method.
The digital welfare map is performed as practical activity in Atsugi IT consortium. The digital welfare map can provide welfare information such as the obstacle and life information on the Internet, by which the senior citizen and physically handicapped persons can go out safe. The actual proof experiment using the model system was conducted, and the validity and convenience were checked in February, 2003. This report shows the outline and its research organization of a model system of a digital welfare map first. Next, the event information functions and its technical examination result of a digital welfare map are shown. And the experiments of these functions were conducted at the time of the regional festival in August, 2003. Validity is checked from evaluation of a participant and a user and the future subject of a digital welfare map is considered.
In orthopedic medicine, many operations are conducted to replace a bone with an implant. In the case of femoral stem fixation in total hip arthroplasty, the initial fixation is important. We investigated which shape or size of fixation site is optimum to prevent the loosening of a joint prosthesis. The distribution of contact pressure on the surfaces of different femoral stems was measured. Two-dimensional stress distribution was mapped on a tactile sensor sheet attached to the stem. We could develop a system to assess the fixation method of a femoral stem. By a newly developed system, we were able to observe the distribution of contact stress on the surfaces of femoral stems.